| IUPAC name
| Other names
|Molar mass||221.37 g/mol|
|Melting point||126 °C (259 °F; 399 K)|
|Boiling point||160 °C (320 °F; 433 K) (detonation starts in the range of 160-225 °C)|
| 11.5 g/100 ml (0 °C)|
14.98 g/100ml (15.7 °C)
15.36 g/100ml (20.0 °C)
22.73 g/100ml (52.1 °C)
24.75 g/100ml (70.0 °C)
|Solubility|| Reacts with acids|
Insoluble in acetone, diethyl ether, CCl4, toluene
|Solubility in ethanol||0.017 g/100 ml (16 °C)|
|Vapor pressure||~0 mmHg|
|Safety data sheet||None|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Barium azide is an inorganic azide with the formula Ba(N3)2. Like most azides, it is explosive, though less sensitive to mechanical shock than lead(II) azide.
Barium azide can be used to make azides of lithium, magnesium, potassium, rubidium, sodium and zinc via substitution with their respective sulfates.
- Ba(N3)2 → Ba + 3 N2
- 3 Ba(N3)2 → Ba3N2 + 8 N2
Barium azide is a white solid, soluble in water.
Barium azide is a shock-sensitive explosive, though compared to most azides it's less sensitive. Likewise, it's relatively insensitive to impact. Wet barium azide is far less sensitive than dry barium azide. When ignited in air, it burns with a green flame and may explode if the temperature is high enough.
Barium azide is not sold since it's a sensitive explosive material. It has to be made in situ.
Barium azide can be prepared by neutralizing barium carbonate or hydroxide with hydrazoic acid. This route is dangerous, due to the high toxicity and volatility of hydrazoic acid.
- Make almost any azide
Barium azide, like most azides is highly poisonous and explosive. Handle it with proper protection.
Should be stored as wet solid, usually at 50%, and not for long periods of time.
The resulting barium salts are treated to barium sulfate using sodium or ammonium sulfate.